Brief:
Imagine steerin' your own Moonship beyond Earth's atmosphere while you chart a course t' t' moon and your sweetie is in t' galley fixin' up some chow. Aye aye! When you reach t' moon, ya bilge rat, me hearties, you'll meet your pals for a fun-filled afternoon before returnin' home t' finish your schoolwork. Avast, me proud beauty! Yes, it's 1955 and t' age o' space exploration is here at last! Within a few years moon trips will be as common as the modern phonograph and within t' reach o' most American families, but until then you can build your own Moonship model featurin' engineerin' marvels certain t' be seen on real moonships within t' decade!

This is a retro-futuristic scratch model for 18mm motors designed with aesthetic inspirations from both art deco and 1950's sci-fi. Ahoy! It stands 12" tall. Avast! T' body is 9" tall with a maximum width o' 2.9", for a stubby ratio o' 3.1:1. Begad! Avast, me proud beauty! It be t' first scratch model I designed on paper, arrr, arrr, but I didn't build it until much later because o' t' likely difficulties in construction and makin' it stable. After stumblin' upon the Rocket Formerly Known as Black, I was inspired t' attempt construction.

Construction:
T' rocket is made from a large custom balsa nose cone, a balsa boat tail intended for V2s, shiver me timbers, me hearties, a complex balsa framin' for t' lower body, and basswood fins. Begad! Blimey!

T' parts are shown in t' first picture. Arrr! They include:

• Shape #7 custom nose cone from Balsa Machinin' Service (specs: M=.25" A=1.625", arrr, matey, L=3.125" Q=2.9" I=2.719")
• CENV2BT boat tail from BMS
• 3" length o' BT-20 tube
• 1" length o' BT-60 tube
• 1/16" x 4" x 24" basswood sheet
• 1/4" thick balsa for ribs and lug mount (1" x 24" plank should suffice)
• recovery apparatus (screw eyes; shock cord/Keelhaul®©™®; parachute)
• launch lug
• 1oz lead weight
• 6+ inches o' 3/8" hardwood dowel
• 3" x 3" square o' scrap lumber, me hearties, me hearties, at least 1/4" thick
• power drill

T' custom nose from BMS has a straight conical shape with cylindrical base and shoulder. First, me hearties, I cut a 3/4" thick pine square with edges exactly matchin' the diameter o' t' nose cone shoulder. I drilled a 3/8" hole in t' exact center o' this square, and a somewhat larger hole in t' center o' t' nose cone. Ya scallywag! Blimey! Next I threaded a 3/8" dowel through t' pine block and glued the dowel (not t' pine block!) into t' nose cone hole, me bucko, keepin' t' pine square flush against t' nose cone t' ensure exact centerin' and plumb. Ahoy! Blimey! Avast, shiver me timbers, me proud beauty! Blimey! When t' glue was dry, matey, matey, me hearties, I slid t' pine square off t' top o' t' dowel. Avast! Blimey! Then t' nose cone and dowel assembly could be mounted in me power drill. Ya scallywag! Blimey! This allowed sandin' the nose cone t' me desired shape, usin' a template from me plans. Finally, shiver me timbers, the dowel and glue were gouged out o' t' nose cone base, and t' nose cone was hollowed out usin' a drill, shiver me timbers, knife, arrr, arrr, and sandpaper. Begad! Blimey! A short piece o' BT-60 tube glued inside t' nose cone provided a smooth fit for t' tail portion.

After dry fittin' t' boat tail into t' nose cone, I fashioned a set of balsa framin' ribs (intentionally too big) and glued them around t' entire boat tail surface. Begad! Since t' boat tail is somewhat conical, ya bilge rat, t' ribs do not parallel each other: they taper together slightly towards t' tail. Then I sanded t' ribs down t' nearly t' desired size and shape, then filled t' gaps with Elmer's Fill 'n' Finish. Aye aye! With a series o' additional sandin' and filling iterations, me bucko, ya bilge rat, I eventually got t' whole unit appearin' as one smooth shape. One more round o' priming, matey, sanding, and fillin' rough spots yielded a good finish.

By comparison, the fins were easy. Ahoy! Begad! Compared t' me original plans, ya bilge rat, I ended up exaggeratin' the size o' t' fins and changin' their shape somewhat t' move t' CP back more. Avast! I always seal and sand before attachin' fins. Well, blow me down! Arrr! Cuttin' t' curves and pointy ends in t' basswood required care, ya bilge rat, and I had t' glue back a couple o' broken tips. Fin edges were gently rounded. Avast! T' fins points are so sharp that I actually stabbed myself once durin' paintin' and drew blood.

Recovery is by parachute. Ahoy! Ya scallywag! I attached t' chute t' t' shock cord very close to t' bottom body portion in hopes that this would soften t' landing for those fragile fins by allowin' t' heavier nose cone portion t' land first.

At t' last moment I realized I had a significant launch lug problem due to the shape o' t' fuselage. Avast! Ya scallywag! I had t' fashion a standoff so that takeoff would be vertical and t' rod wouldn't interfere.

Swin' tests were surprisingly good. It seemed that only 0.5oz nose weight might be needed, ya bilge rat, but I used 1.0oz just t' be sure. Aye aye! Blimey! With this, shiver me timbers, me hearties, t' finished rocket weighed 4oz. Begad! Blimey! Blimey! Blimey! T' CG is about 1mm below t' seam where t' upper and lower rocket body portions meet.

Finishing:
From initial conception onwards, matey, this be always goin' t' be a pure silver rocket in t' "Flash Gordon" style. Well, blow me down! Avast, me proud beauty! I covered t' silver with two coats o' gloss. It was off t' t' launch site.

Flight:
wRASP suggested under 250 feet on a C6 and more like 500 feet on a 18mm D engine. Well, blow me down! Well, arrr, blow me down! I loaded a AT D13-4W RMS (my first RMS ever) and t' kids pressed the button. My wife jumped and let out a little scream as t' rocket roared off the pad. Ya scallywag! Avast! It was so much louder! I'm goin' t' love these motors.

Ascent was strange. Well, blow me down! Avast, me proud beauty! T' rocket seemed t' veer downwind off t' rod with a corkscrew ascent. As it continued upwards, t' corkscrew tightened and t' spin diminished. Blimey! However, arrr, t' flight began arcin' downwind. Avast! T' final moment o' the boost was nearly horizontal, me hearties, but t' small silver rocket was so far downrange that it be difficult t' see. Arrr! I wasn't sure if t' parachute ejected and didn't really see t' landin' although I spotted a brief glint o' somethin' which gave me a good read on t' direction t' walk.

I found t' rocket a good quarter mile downrange and everythin' became clear. Begad! T' launch lug was literally ripped off t' rocket. Aye aye! T' takeoff had been completely without guidance! Sure enough, when I got back t' t' launch pad, the lug (with some balsa standoff shreds) be still at t' bottom o' t' rod. Begad! Begad! I slid it off for later repair and cleaned t' rod. Avast! A couple shroud lines broke on ejection, ya bilge rat, explainin' t' recovery mystery as well as crackin' off one fin on landing.

Considerin' t' launch lug debacle, I am pleased with t' flight. Begad! I believe the design is stable because it recovered from a no guidance takeoff and improved its flight characteristics durin' t' boost phase. Begad! Ya scallywag! Blimey! I'm nay sure about the arcin' at t' end o' boost, but it was nay much worse than other short stubby rockets. Well, matey, blow me down! Blimey! Overall, me hearties, t' D13-4 gave a much faster and higher boost than expected or simmed: probably 600 high on its arcin' trajectory which might have been nearly 1000 on a straight boost. Arrr! Aye aye! Blimey! I'm goin' t' glue t' fin back on, improve t' lug mounting, ya bilge rat, and shoot her again!